bufferplayernode.h

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
#pragma once
 
// Std includes
#include <atomic>
 
// Nap includes
#include <audio/utility/safeptr.h>
 
// Audio includes
#include <audio/core/audionode.h>
#include <audio/core/audionodemanager.h>
 
namespace nap
{
    namespace audio
    {
        
        class NAPAPI BufferPlayerNode : public Node
        {
        RTTI_ENABLE(Node)
        
        public:
            BufferPlayerNode(NodeManager& manager) : Node(manager)
            {}
            
            OutputPin audioOutput = {this};
            
            void play(int channel = 0, DiscreteTimeValue position = 0, ControllerValue speed = 1.);
            
            void stop();
            
            void setSpeed(ControllerValue speed);
            
            void setPosition(DiscreteTimeValue position);
            
            void setChannel(int channel);
            
            void setBuffer(SafePtr<MultiSampleBuffer> buffer);
            
            ControllerValue getSpeed() const { return mSpeed; }
            
            DiscreteTimeValue getPosition() const { return mPosition; }
            
            int getChannel() const { return mChannel; }
        
        private:
            // Inherited from Node
            void process() override;
            
            std::atomic<bool> mPlaying = {false}; // Indicates wether the node is currently playing.
            std::atomic<int> mChannel = {0}; // The channel within the buffer that is being played bacl/
            std::atomic<double> mPosition = {0}; // Current position of playback in samples within the source buffer.
            std::atomic<ControllerValue> mSpeed = {1.f}; // Playback speed as a fraction of the original speed.
            SafePtr<MultiSampleBuffer> mBuffer = nullptr; // Pointer to the buffer with audio material being played back.
        };
        
    }
}